What age is mesothelioma most common?

Who Is Most at Risk for Mesothelioma?

Mesothelioma is a rare and aggressive cancer, but certain patterns in its occurrence help paint a clearer picture of who it affects most. While it can technically develop at any age, it’s exceptionally uncommon in people under 45. The reality is that mesothelioma tends to show up later in life, primarily due to its long latency period—often 20 to 50 years—between asbestos exposure and diagnosis.

The vast majority of cases occur in older adults. Approximately 75% of people diagnosed with mesothelioma are 65 or older. This trend is closely tied to the history of asbestos use in industries like construction, shipbuilding, and manufacturing, where workers from past decades were heavily exposed. Since men made up the bulk of that workforce, they now account for the highest number of diagnoses.

While women and younger people can develop mesothelioma, it’s far less frequent. When it does occur in younger individuals, it's often linked to secondary exposure—like washing the clothes of someone who worked with asbestos—or environmental exposure in areas with natural asbestos deposits.

Age remains one of the most significant factors, but it’s the combination of age and occupational history that tells the full story. As awareness grows and regulations tighten around asbestos, new cases are expected to decline over time. Still, for those who worked in high-risk jobs decades ago, the effects are still emerging today. Early detection and specialized care are crucial, especially for seniors with a history of asbestos exposure.